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-rw-r--r--ip/iplink_vlan.c280
1 files changed, 280 insertions, 0 deletions
diff --git a/ip/iplink_vlan.c b/ip/iplink_vlan.c
new file mode 100644
index 0000000..1426f2a
--- /dev/null
+++ b/ip/iplink_vlan.c
@@ -0,0 +1,280 @@
+/*
+ * iplink_vlan.c VLAN device support
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Authors: Patrick McHardy <kaber@trash.net>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <linux/if_vlan.h>
+
+#include "rt_names.h"
+#include "utils.h"
+#include "ip_common.h"
+
+static void print_explain(FILE *f)
+{
+ fprintf(f,
+ "Usage: ... vlan id VLANID\n"
+ " [ protocol VLANPROTO ]\n"
+ " [ reorder_hdr { on | off } ]\n"
+ " [ gvrp { on | off } ]\n"
+ " [ mvrp { on | off } ]\n"
+ " [ loose_binding { on | off } ]\n"
+ " [ bridge_binding { on | off } ]\n"
+ " [ ingress-qos-map QOS-MAP ]\n"
+ " [ egress-qos-map QOS-MAP ]\n"
+ "\n"
+ "VLANID := 0-4095\n"
+ "VLANPROTO: [ 802.1Q | 802.1ad ]\n"
+ "QOS-MAP := [ QOS-MAP ] QOS-MAPPING\n"
+ "QOS-MAPPING := FROM:TO\n"
+ );
+}
+
+static void explain(void)
+{
+ print_explain(stderr);
+}
+
+static int on_off(const char *msg, const char *arg)
+{
+ fprintf(stderr, "Error: argument of \"%s\" must be \"on\" or \"off\", not \"%s\"\n", msg, arg);
+ return -1;
+}
+
+static int parse_qos_mapping(__u32 key, char *value, void *data)
+{
+ struct nlmsghdr *n = data;
+ struct ifla_vlan_qos_mapping m = {
+ .from = key,
+ };
+
+ if (get_u32(&m.to, value, 0))
+ return 1;
+
+ return addattr_l(n, 1024, IFLA_VLAN_QOS_MAPPING, &m, sizeof(m));
+}
+
+static int vlan_parse_qos_map(int *argcp, char ***argvp, struct nlmsghdr *n,
+ int attrtype)
+{
+ struct rtattr *tail;
+
+ tail = addattr_nest(n, 1024, attrtype);
+
+ if (parse_mapping(argcp, argvp, false, &parse_qos_mapping, n))
+ return 1;
+
+ addattr_nest_end(n, tail);
+ return 0;
+}
+
+static int vlan_parse_opt(struct link_util *lu, int argc, char **argv,
+ struct nlmsghdr *n)
+{
+ struct ifla_vlan_flags flags = { 0 };
+ __u16 id, proto;
+
+ while (argc > 0) {
+ if (matches(*argv, "protocol") == 0) {
+ NEXT_ARG();
+ if (ll_proto_a2n(&proto, *argv))
+ invarg("protocol is invalid", *argv);
+ addattr_l(n, 1024, IFLA_VLAN_PROTOCOL, &proto, 2);
+ } else if (matches(*argv, "id") == 0) {
+ NEXT_ARG();
+ if (get_u16(&id, *argv, 0))
+ invarg("id is invalid", *argv);
+ addattr_l(n, 1024, IFLA_VLAN_ID, &id, 2);
+ } else if (matches(*argv, "reorder_hdr") == 0) {
+ NEXT_ARG();
+ flags.mask |= VLAN_FLAG_REORDER_HDR;
+ if (strcmp(*argv, "on") == 0)
+ flags.flags |= VLAN_FLAG_REORDER_HDR;
+ else if (strcmp(*argv, "off") == 0)
+ flags.flags &= ~VLAN_FLAG_REORDER_HDR;
+ else
+ return on_off("reorder_hdr", *argv);
+ } else if (matches(*argv, "gvrp") == 0) {
+ NEXT_ARG();
+ flags.mask |= VLAN_FLAG_GVRP;
+ if (strcmp(*argv, "on") == 0)
+ flags.flags |= VLAN_FLAG_GVRP;
+ else if (strcmp(*argv, "off") == 0)
+ flags.flags &= ~VLAN_FLAG_GVRP;
+ else
+ return on_off("gvrp", *argv);
+ } else if (matches(*argv, "mvrp") == 0) {
+ NEXT_ARG();
+ flags.mask |= VLAN_FLAG_MVRP;
+ if (strcmp(*argv, "on") == 0)
+ flags.flags |= VLAN_FLAG_MVRP;
+ else if (strcmp(*argv, "off") == 0)
+ flags.flags &= ~VLAN_FLAG_MVRP;
+ else
+ return on_off("mvrp", *argv);
+ } else if (matches(*argv, "loose_binding") == 0) {
+ NEXT_ARG();
+ flags.mask |= VLAN_FLAG_LOOSE_BINDING;
+ if (strcmp(*argv, "on") == 0)
+ flags.flags |= VLAN_FLAG_LOOSE_BINDING;
+ else if (strcmp(*argv, "off") == 0)
+ flags.flags &= ~VLAN_FLAG_LOOSE_BINDING;
+ else
+ return on_off("loose_binding", *argv);
+ } else if (matches(*argv, "bridge_binding") == 0) {
+ NEXT_ARG();
+ flags.mask |= VLAN_FLAG_BRIDGE_BINDING;
+ if (strcmp(*argv, "on") == 0)
+ flags.flags |= VLAN_FLAG_BRIDGE_BINDING;
+ else if (strcmp(*argv, "off") == 0)
+ flags.flags &= ~VLAN_FLAG_BRIDGE_BINDING;
+ else
+ return on_off("bridge_binding", *argv);
+ } else if (matches(*argv, "ingress-qos-map") == 0) {
+ NEXT_ARG();
+ if (vlan_parse_qos_map(&argc, &argv, n,
+ IFLA_VLAN_INGRESS_QOS))
+ invarg("invalid ingress-qos-map", *argv);
+ continue;
+ } else if (matches(*argv, "egress-qos-map") == 0) {
+ NEXT_ARG();
+ if (vlan_parse_qos_map(&argc, &argv, n,
+ IFLA_VLAN_EGRESS_QOS))
+ invarg("invalid egress-qos-map", *argv);
+ continue;
+ } else if (matches(*argv, "help") == 0) {
+ explain();
+ return -1;
+ } else {
+ fprintf(stderr, "vlan: unknown command \"%s\"?\n", *argv);
+ explain();
+ return -1;
+ }
+ argc--, argv++;
+ }
+
+ if (flags.mask)
+ addattr_l(n, 1024, IFLA_VLAN_FLAGS, &flags, sizeof(flags));
+
+ return 0;
+}
+
+static void vlan_print_map(FILE *f,
+ const char *name_json,
+ const char *name_fp,
+ struct rtattr *attr)
+{
+ struct ifla_vlan_qos_mapping *m;
+ struct rtattr *i;
+ int rem;
+
+ open_json_array(PRINT_JSON, name_json);
+ print_nl();
+ print_string(PRINT_FP, NULL, " %s { ", name_fp);
+
+ rem = RTA_PAYLOAD(attr);
+ for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
+ m = RTA_DATA(i);
+
+ if (is_json_context()) {
+ open_json_object(NULL);
+ print_uint(PRINT_JSON, "from", NULL, m->from);
+ print_uint(PRINT_JSON, "to", NULL, m->to);
+ close_json_object();
+ } else {
+ fprintf(f, "%u:%u ", m->from, m->to);
+ }
+ }
+
+ close_json_array(PRINT_JSON, NULL);
+ print_string(PRINT_FP, NULL, "%s ", "}");
+}
+
+static void vlan_print_flags(FILE *fp, __u32 flags)
+{
+ open_json_array(PRINT_ANY, is_json_context() ? "flags" : "<");
+#define _PF(f) if (flags & VLAN_FLAG_##f) { \
+ flags &= ~VLAN_FLAG_##f; \
+ print_string(PRINT_ANY, NULL, flags ? "%s," : "%s", #f); \
+ }
+ _PF(REORDER_HDR);
+ _PF(GVRP);
+ _PF(MVRP);
+ _PF(LOOSE_BINDING);
+ _PF(BRIDGE_BINDING);
+#undef _PF
+ if (flags)
+ print_hex(PRINT_ANY, NULL, "%x", flags);
+ close_json_array(PRINT_ANY, "> ");
+}
+
+static void vlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
+{
+ struct ifla_vlan_flags *flags;
+
+ SPRINT_BUF(b1);
+
+ if (!tb)
+ return;
+
+ if (tb[IFLA_VLAN_PROTOCOL] &&
+ RTA_PAYLOAD(tb[IFLA_VLAN_PROTOCOL]) < sizeof(__u16))
+ return;
+ if (!tb[IFLA_VLAN_ID] ||
+ RTA_PAYLOAD(tb[IFLA_VLAN_ID]) < sizeof(__u16))
+ return;
+
+ if (tb[IFLA_VLAN_PROTOCOL])
+ print_string(PRINT_ANY,
+ "protocol",
+ "protocol %s ",
+ ll_proto_n2a(
+ rta_getattr_u16(tb[IFLA_VLAN_PROTOCOL]),
+ b1, sizeof(b1)));
+ else
+ print_string(PRINT_ANY, "protocol", "protocol %s ", "802.1q");
+
+ print_uint(PRINT_ANY,
+ "id",
+ "id %u ",
+ rta_getattr_u16(tb[IFLA_VLAN_ID]));
+
+ if (tb[IFLA_VLAN_FLAGS]) {
+ if (RTA_PAYLOAD(tb[IFLA_VLAN_FLAGS]) < sizeof(*flags))
+ return;
+ flags = RTA_DATA(tb[IFLA_VLAN_FLAGS]);
+ vlan_print_flags(f, flags->flags);
+ }
+ if (tb[IFLA_VLAN_INGRESS_QOS])
+ vlan_print_map(f,
+ "ingress_qos",
+ "ingress-qos-map",
+ tb[IFLA_VLAN_INGRESS_QOS]);
+ if (tb[IFLA_VLAN_EGRESS_QOS])
+ vlan_print_map(f,
+ "egress_qos",
+ "egress-qos-map",
+ tb[IFLA_VLAN_EGRESS_QOS]);
+}
+
+static void vlan_print_help(struct link_util *lu, int argc, char **argv,
+ FILE *f)
+{
+ print_explain(f);
+}
+
+struct link_util vlan_link_util = {
+ .id = "vlan",
+ .maxattr = IFLA_VLAN_MAX,
+ .parse_opt = vlan_parse_opt,
+ .print_opt = vlan_print_opt,
+ .print_help = vlan_print_help,
+};
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